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conception date

hello,
i need some help estabilishing a more accurate conception date.
i had sex with a man around the end of march, like march 25 or 26 , he did not come inside of me, we ended up finishing with oral sex, thats how he came.
then my period came a little late, like 5 days late, and also found out through a ultrasound i had an ovarian cyst. (that went away with my period though.)
just to be sure, i took pregnancy tests and they were all negative then.
so my period came around april 3rd, and lasted like 4 days, like it has always been though.
then around april 9 i had oral sex, no penetration at all.
from april 13th on i started having unprotected sex with my boyfriend .
on may 17th i found out i was pregnant, and the same day i had an ultrasound that was stating i was 6 weeks and 3 days pregnant and the due date was january 7th ,2013.
the other ultrasounds i had were stating that my due date was on january 10th, ( morphologic ultrasound i had at 20 weeks, and a 3d one that i had at 25 weeks)
i need to know when i have conceived. my doctor says sometimes around april 16th.
i need to know if there is a chance that i got pregnant , maybe with pre ejaculation sperm, at the end of march,and maybe what i thought it was my period, was only implantation blood?
if so, though, all the ultrasounds i had should have stated that i was 2 weeks ahead, right? please answer me, im very anxious!
Best Answer
Avatar universal
Nichole, when counting back 6 weeks 3days from may 17 you only count back 4 weeks 3 days and that would be conception date. Which is April 16, exactly as her doc said.
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Avatar universal
so if i have conceived in the middle of april, i was with my boyfriend from the night of april 13th on.. how come , if the tech on may 2nd saw a embryo, it was already measuring 2.0 cm ?
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Avatar universal
if what she saw on may 2nd was a embryo, that she did not recognise , 2 cm is a big size, if you look on charts, it looks like its 8 weeks...
im very very concerned..
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Avatar universal
thank you !
the ultrasound tech on may 17th did not know about the other i had to check on my cyst on may 2nd though.
what im worried about , still, is the fact that if it was a embryo that she seen on may 2nd, then 2 cm is big, so i guess i should be farther along now, instead of being in my 34 weeks.
what do you think?
i ll get more explanation again from my ob on wedn at my appointment, but like i said, he keeps saying my due date is jan 7th..
maybe on may 2nd she measured the whole gestational sac, but on may 17th they measured the embryo? i dont know what to think...i keep praying, and i can't sleep at night, im anxious all day long ! ;-(
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134578 tn?1693250592
COMMUNITY LEADER
Two weeks (fetal age) is not large enough even to see on an ultrasound, that would be four weeks (gestational age) and all the books say you simply can't see anything at four weeks, certainly not the blastocyst.

Please stop worrying.  When the ultrasonographer said 6w3d, she came to that conclusion by measuring the embryo on May 17.  She didn't do it by looking at the notes from May 2 when the first tech mythically mistook a fibroid for an embryo and then adding up with pencil and paper without measuring the actual embryo on the screen right in front of her.  She saw an embryo and measured its actual size, May 17.  Tech number two is not influenced by what tech number one wrote on a report on May 2.

Believe your doctor.  He sounds like you have asked him more than once. Try to be as trusting of your actual trained doctor and ultrasonographer and their professional talents as you are at spinning worry-based theories that necessarily imply that they are incompetent at identifying blastocysts and embryos in the uterus, a job they do every single day.  I heard a funny one from a doctor the other day, who said "Every time I hear 'but I read on the Internet that --' from a patient, it sounds like they are saying 'but I read on the you-don't-know-anything-about-medicine that ..."  Either this guy is your doctor or he is not, but don't nibble him to death over this issue, which even you identify as your conscience and has so little to do with your actual dates and evidence.  Don't plague your one-night stand with your concerns, either, especially if you don't want to amp up the drama to the point where the whole thing gets back to your boyfriend.  Trust and calm down, you are doing fine and are in the right time frame.
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Avatar universal
and the "march" man keeps saying he is steril, his sperm is not good to conceive, he is been told so, never had kids. he is not worried at all when i tell him my concernes
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Avatar universal
Annie, i forgot to mention that on may 2nd i had a ultrasound to check on my ovarian cyst and the cist was gone, but there was a 2.0 cm non cystic intramural mass in the uterine fundus anteriorly suggestive of an intramural uterine fibroid.

on may 17th when i had my pregnancy utrasound, (i went in the er cause i seen some blood after taking hcg test positive) the tech didnt say anything about this though, only said i was 6 weeks on 3 days.

any way that the tech of may 2nd had mistaken a embryo with a fibroid? if so though, 2 cm is too big for a 2 weeks(fetal age)embryo..what do you think?

when i told this to my ob he said you conceived in the middle of april, due date jan 7th...he keeps saying that to me..
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